Finding the Fourth Proportional to 89,343.28, 123,285 and 51,616.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,343.28 : 123,285 = 51,616.72 : x
2. Step 2: Convert to fraction form
   89,343.28/123,285 = 51,616.72/x
3. Step 3: Cross multiply
   89,343.28x = 123,285 × 51,616.72
4. Step 4: Simplify right side
   89,343.28x = 6,363,567,325.20
5. Step 5: Solve for x
   x = 6,363,567,325.20/89,343.28
6. Step 6: Final answer
   x = 71,226.03